A method of using a press-to-apply card pen

Abstract

This invention provides a method for using a press-type coloring pen, comprising the following steps: positioning the protective sleeve; pressing to apply color; pressing down on the pen shell, causing the protective sleeve to retract backward relative to the pen shell under pressure; the lead core inside the pen shell contacts the paper surface, and the lead core drives the floating clamping mechanism inside the pen shell to move backward and compress the coloring elastic element between the pen shell and the floating clamping mechanism until the protective sleeve stops retracting after hitting the protective sleeve limit step inside the pen shell. At this time, the coloring elastic element provides coloring pressure to the floating clamping mechanism, allowing the lead core to fill the coloring frame; resetting and storing. The method for using a press-type coloring pen provided by this invention, through the structure of the floating clamping mechanism, the constant pressure elastic element, and the axial free travel, allows coloring to be completed with only a single press in the vertical direction, and has the characteristics of accurate positioning, uniform coloring density, avoidance of accidental touches, and excellent lead core protection performance.

Description

Technical Field

[0001] This invention relates to the field of stationery technology, specifically to a method of using a press-type marking pen. Background Technology

[0002] Most mainstream answer sheet pencils on the market currently use the standard writing-style answer sheet design, and their lead leads are mostly thin round or narrow rectangular. When filling in answer sheets, users need to manually and repeatedly draw horizontal strokes to completely fill in the standard answer sheet marking boxes. This has several shortcomings in practical application:

[0003] 1. The efficiency of marking the answer sheet is low. Repeated back-and-forth marking is time-consuming and prone to errors such as misalignment and exceeding the borders, resulting in substandard marking quality. 2. The color density of the markings is difficult to maintain consistently. The contact pressure between the lead and the paper relies entirely on manual control. Too little pressure results in a light color that cannot be recognized by the marking equipment; too much pressure can easily break the lead, disrupting normal use. 3. Existing answer sheet pencils have a high risk of accidental activation. During marking, the lead is easily retracted due to the reverse force of the paper. Accidental activation of the pressing cap can cause the lead to extend unexpectedly, interfering with the marking process. 4. After feeding, the lead is directly exposed on the outside of the tip. During carrying and storage, the lead is easily broken due to impacts, significantly shortening the product's lifespan and failing to meet the requirements of efficient and stable marking in examination scenarios. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of this, the present invention provides a method for using a press-type marking pen. Through the structure of a floating clamping mechanism, a constant pressure elastic component and an axial free stroke, marking marks that meet specifications can be completed with only a single press in the vertical direction. It has the characteristics of accurate positioning, uniform coloring density, avoidance of accidental touches, and excellent lead core protection performance.

[0006] (II) Technical Solution

[0007] To solve the aforementioned technical problem, the present invention provides a method for using a press-type marking pen, comprising the following steps:

[0008] Protective sleeve positioning: Place the pen shell vertically, with the retractable protective sleeve installed at the front end of the pen shell facing downwards, and the front end of the protective sleeve aligned with the marking frame and in contact with the paper surface;

[0009] Press and apply the coating; press down on the pen shell, and the protective sleeve retracts backward relative to the pen shell under pressure; the front end of the lead core inside the pen shell contacts the paper surface, and the lead core, under the reaction force of the paper surface, drives the floating clamping mechanism inside the pen shell to move backward as a whole and compress the coating elastic element between the pen shell and the floating clamping mechanism until the protective sleeve stops retracting after hitting the sleeve limiting step inside the pen shell. At this time, the coating elastic element provides coating pressure to the floating clamping mechanism, so that the lead core fills the coating frame;

[0010] Reset and store; lift the pen case, the coating elastic element drives the floating clamping mechanism and the lead core to reset, and at the same time the sleeve reset element between the pen case and the protective sleeve pushes the protective sleeve to reset, so that the front end of the lead core is stored in the protective sleeve.

[0011] Furthermore, in the pressing and coating step, when the lead core moves the floating clamping mechanism backward, the axial displacement of the floating clamping mechanism is converted into circumferential rotation through the spiral guide structure between the floating clamping mechanism and the pen shell, thereby causing the floating clamping mechanism to rotate and coat the lead core.

[0012] Furthermore, in the pre-painting standby state, the sheath reset component pushes the protective sleeve forward, thereby retracting the front end of the lead core into the protective sleeve; the painting elastic component pushes the floating clamping mechanism, causing the front end of the floating clamping mechanism to abut against the rear end surface of the first support step inside the pen shell.

[0013] Furthermore, in the pressing and coating step, when the pen shell begins to move downward, the protective sleeve first retracts relative to the pen shell and compresses the protective sleeve reset component until the front end face of the lead core is flush with the front end face of the protective sleeve. At this time, the front end of the lead core begins to contact the paper surface. When the pen shell continues to move downward, the protective sleeve, the lead core, and the floating clamping mechanism maintain their relative positions and move backward together relative to the pen shell until the protective sleeve abuts against the protective sleeve limiting step.

[0014] Furthermore, prior to the protective sleeve positioning step, the following steps are also included:

[0015] Unlock and feed the lead; place the pen case vertically with the protective sleeve facing downwards; then press the press cap at the end of the pen case, which drives the push rod connected to it to move. The push rod pushes the elastic clamping sleeve of the floating clamping mechanism forward relative to the guide bushing on its outer side. The elastic clamping sleeve releases the lead core, and the lead core slides downwards under the action of gravity to feed the lead.

[0016] Reset clamping; release the pressing cap, the push rod is reset under the action of the push rod reset member between the pen shell and the push rod, and at the same time the elastic clamping sleeve is reset under the action of the clamping sleeve reset member between the guide bushing and the elastic clamping sleeve, the elastic clamping sleeve clamps and pulls back the lead core, so that the front end of the lead core is retracted into the protective sleeve.

[0017] Furthermore, prior to the lead-feeding unlocking step, the following steps are also included:

[0018] Install the cap; insert the cap into the front end of the pen casing, with the cap's retaining post extending into the interior of the protective sleeve;

[0019] During the unlocking and lead feeding step, the lead core slides downwards under the action of gravity until the front end of the lead core hits the limiting post and stops.

[0020] Furthermore, in the standby state before lead feeding, the clamp reset component pushes the elastic clamp sleeve, causing the elastic clamp sleeve to have a tendency to move backward relative to the guide bushing, thereby keeping the elastic clamp sleeve in the state of clamping the lead core; the push rod reset component pushes the push rod, causing the push rod to abut against the push rod limiting shoulder inside the pen shell, at which time the front end of the push rod is away from the rear end of the elastic clamp sleeve and forms an axial free stroke.

[0021] Furthermore, in the unlocking and lead feeding step, when the pressing cap is pressed, the pressing cap drives the push rod to move closer to the elastic clamping sleeve. At this time, the front end of the push rod moves within the axial free stroke reserved between the elastic clamping sleeve and the push rod. When the pressing cap continues to move down, the push rod abuts against and pushes the elastic clamping sleeve after completing the axial free stroke.

[0022] Furthermore, in the unlocking and lead feeding step, when the push rod pushes the elastic clamping sleeve to move forward relative to the guide bushing, the multi-lobed elastic claws at the front end of the elastic clamping sleeve disengage from the constraint of the inner conical wall on the guide bushing and open to release the lead core; in the resetting and clamping step, when the clamping sleeve resetting member pushes the elastic clamping sleeve to move backward relative to the guide bushing to reset, the elastic claws are compressed by the radial extrusion force of the inner conical wall and clamp the lead core.

[0023] Furthermore, in the unlocking and lead feeding step, before pressing the pressing cap, the pressing cap is pulled off from the end of the push rod, exposing the core-loading channel inside the push rod; the lead core is inserted into the core-loading channel from the end of the push rod, and then the pressing cap is reinserted onto the push rod.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0026] 1) It replaces the traditional method of repeatedly writing back and forth on the card, and can complete the card forming by a single vertical press, which significantly improves the efficiency of card forming. In addition, the protective cover can be aligned with the card forming frame for precise positioning, effectively preventing the writing from deviating or going beyond the frame, and the filling is more neat.

[0027] 2) The floating clamping mechanism is used in conjunction with the coating elastic element. During the coating operation, the floating clamping mechanism moves backward and compresses the coating elastic element. The coating elastic element provides stable coating pressure, which can offset the changes in the force applied by the hand, so that the coloring concentration of the coating mark is stable. This completely improves the phenomenon of shallow coating marks or lead core breakage caused by uneven force, and meets the requirements of machine reading and recognition.

[0028] 3) With the cooperation of the elastic gripper and the inner conical wall, the greater the reverse force applied by the paper surface to the lead core during the coating process, the stronger the clamping force of the elastic clamping sleeve. The lead core will not move backward relative to the elastic clamping sleeve, and the clamping effect is stable. The axial free stroke is used to physically separate the two working paths of coating and lead feeding, so as to achieve the effect of preventing accidental contact. Whether it is normal filling or encountering daily bumps, it can avoid the abnormal situation of the lead core accidentally extending, ensuring the stability of the use process.

[0029] 4) A retractable protective sleeve is configured to protect the lead core. When not in use, the lead core is stored inside the protective sleeve. After the card is applied and reset, the lead core can automatically retract into the protective sleeve, effectively reducing lead core breakage caused by bumps, reducing wear and tear, and extending the service life of the lead core. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a simplified flowchart illustrating the method of using a press-type marking pen according to the present invention.

[0032] Figure 2 This is a perspective view of a press-type marking pen according to the present invention;

[0033] Figure 3 This is a three-dimensional view of the cap and tip of a press-type marking pen according to the present invention after separation;

[0034] Figure 4 This is a cross-sectional view of a press-type marking pen of the present invention;

[0035] Figure 5 This is an exploded view of a press-type marking pen of the present invention;

[0036] Figure 6 This is a perspective view of the internal structure of the pen shell in a press-type marking pen of the present invention;

[0037] Figure 7 This is a schematic diagram of the protective sleeve assembly in a press-type marking pen according to the present invention;

[0038] Figure 8 This is a schematic diagram of the floating clamping mechanism in a press-type marking pen of the present invention;

[0039] Figure 9 This is a schematic diagram of the push rod assembly in a press-type marking pen of the present invention;

[0040] Figure 10 This is a perspective view of a floating clamping mechanism holding a lead core in a press-type marking pen according to the present invention.

[0041] Figure 11 This is a schematic diagram of the connection between the guide bushing and the elastic clamping sleeve in a press-type marking pen according to the present invention;

[0042] Figure 12 This is a perspective view of the guide bushing and elastic clamping sleeve after separation in a press-type marking pen of the present invention;

[0043] Figure 13 This is a perspective view of the spiral guide structure in a press-type marking pen of the present invention;

[0044] Figure 14 This is a perspective view of the cap of a press-type marking pen according to the present invention;

[0045] The component names corresponding to the various labels in the figure are as follows: 1. Pen shell; 11. Rear tail lever; 12. Front grip lever; 13. Flange plug; 101. Sheath limiting step; 102. Bushing limiting step; 103. First support step; 104. Second support step; 105. Push rod limiting shoulder; 106. Anti-roll limiting plane; 107. Guide protrusion; 2. Floating clamping mechanism; 21. Guide bushing; 211. Inner conical wall; 212. Limiting shoulder; 213. Spiral groove; 22. Elastic clamping sleeve; 221. 1. Elastic gripper; 222. Thinning section; 223. Clamping hole; 224. Circular transition hole; 225. Guide hole; 23. Sleeve reset component; 24. First limit snap ring; 25. Second limit snap ring; 3. Sheath assembly; 31. Protective sleeve; 32. Sheath reset component; 4. Push rod assembly; 41. Push rod; 411. Core loading channel; 42. Push rod reset component; 43. Press cap; 44. Third limit snap ring; 5. Lead core; 6. Coated elastic component; 7. Axial free travel; 8. Head cap; 801. Limiting post. Detailed Implementation

[0046] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0047] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0049] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0051] Combination Figure 1 As shown, the present invention provides a method for using a press-type marking pen, comprising the following steps:

[0052] Positioning of the protective sleeve 31: Place the pen shell 1 vertically (perpendicular to the marking paper), with the retractable protective sleeve 31 installed at the front end of the pen shell 1 facing downwards, and the front end of the protective sleeve 31 aligned with the marking frame and in contact with the paper surface.

[0053] Press down to apply the coating; press down on the pen shell 1, and the protective sleeve 31 is subjected to the force of the paper surface. The protective sleeve 31 is compressed and retracts backward relative to the pen shell 1. As the protective sleeve 31 retracts, the front end of the lead core 5 inside the pen shell 1 begins to contact the paper surface. The lead core 5 is driven by the reaction force of the paper surface to move the floating clamping mechanism 2 inside the pen shell 1 backward and compress the coating elastic element 6 between the pen shell 1 and the floating clamping mechanism 2 until the protective sleeve 31 stops retracting after hitting the protective sleeve limiting step 101 inside the pen shell 1. At this time, the coating elastic element 6 provides stable coating pressure for the floating clamping mechanism 2, so that the lead core 5 fills the coating frame.

[0054] Reset and store; lift the pen shell 1, the elastic element 6 drives the floating clamping mechanism 2 and the lead 5 to reset, at the same time the sleeve reset element 32 between the pen shell 1 and the protective sleeve 31 pushes the protective sleeve 31 to reset, so that the front end of the lead 5 is re-stored in the protective sleeve 31.

[0055] During the pressing and coating process, when the lead core 5 moves the floating clamping mechanism 2 backward, the axial displacement of the floating clamping mechanism 2 is converted into circumferential rotation through the spiral guide structure between the floating clamping mechanism 2 and the pen shell 1. This causes the floating clamping mechanism 2 to rotate while moving backward, thereby driving the lead core 5 to rotate and coat the card. The coating marks are clearer and the coating effect is better.

[0056] In the pre-painting standby state, the sheath reset member 32 pushes the protective sleeve 31 forward, thereby retracting the front end of the lead core 5 into the protective sleeve 31. In the pre-painting standby state, the painting elastic member 6 pushes the floating clamping mechanism 2, causing the front end of the floating clamping mechanism 2 to abut against the rear end surface of the first support step 103 inside the pen shell 1.

[0057] During the pressing and marking process, when the pen shell 1 begins to move downwards, the protective sleeve 31 first retracts relative to the pen shell 1 and compresses the protective sleeve reset piece 32 until the front end face of the lead core 5 is flush with the front end face of the protective sleeve 31. At this time, the front end of the lead core 5 begins to contact the paper surface. When the pen shell 1 continues to move downwards, the protective sleeve 31, the lead core 5, and the floating clamping mechanism 2 maintain their relative positions and move backwards relative to the pen shell 1 together until the protective sleeve 31 abuts against the protective sleeve limiting step 101.

[0058] Combination Figure 1 As shown, in order to ensure smooth card application, a lead feeding operation is performed before card application, which means that the following steps are performed before the protective sleeve positioning step:

[0059] Install the cap 8; insert the cap 8 into the front end of the pen shell 1, with the limiting post 801 of the cap 8 extending into the interior of the protective sleeve 31;

[0060] Unlock and feed the lead; place the pen case 1 vertically with the protective sleeve 31 and the cap 8 facing downwards; then press the pressing cap 43 at the end of the pen case 1. The pressing cap 43 drives the push rod 41 connected to the pressing cap 43 to move. The push rod 41 pushes the elastic clamping sleeve 22 of the floating clamping mechanism 2 to move forward relative to the guide bushing 21 on the outside of the elastic clamping sleeve 22. The elastic clamping sleeve 22 releases the lead core 5. The lead core 5 slides downwards under the action of gravity until the front end of the lead core 5 hits the limit post 801 and stops.

[0061] Reset the clamp; release the pressing cap 43, and the push rod 41 resets under the action of the push rod reset member 42 between the pen shell 1 and the push rod 41. At the same time, the elastic clamping sleeve 22 resets under the action of the clamping sleeve reset member 23 between the guide bushing 21 and the elastic clamping sleeve 22. The elastic clamping sleeve 22 clamps and pulls back the lead core 5, so that the front end of the lead core 5 is retracted into the protective sleeve 31. In this structure, the cap 8 can restrict the front end of the lead core 5 within the protective sleeve 31. When the clamping sleeve reset member 23 is reset, the elastic clamping sleeve 22 can clamp and pull back the lead core 5, further ensuring that the front end of the lead core 5 is retracted into the protective sleeve 31. Finally, the cap 8 needs to be removed after the lead feeding is completed.

[0062] In the pre-lead feeding standby state, the clamp reset member 23 pushes the elastic clamping sleeve 22, causing the elastic clamping sleeve 22 to tend to move backward relative to the guide bushing 21, thereby keeping the elastic clamping sleeve 22 in the state of clamping the lead core 5. In the pre-lead feeding standby state, the push rod reset member 42 pushes the push rod 41, causing the push rod 41 to abut against the push rod limiting shoulder 105 inside the pen shell 1. At this time, the front end of the push rod 41 is away from the rear end of the elastic clamping sleeve 22 and forms an axial free stroke 7.

[0063] During the lead feeding unlocking process, when the pressing cap 43 is pressed, the pressing cap 43 drives the push rod 41 to move closer to the elastic clamping sleeve 22. At this time, the front end of the push rod 41 moves within the axial free stroke 7 reserved between the elastic clamping sleeve 22 and the push rod 41. When the pressing cap 43 continues to move down, the push rod 41 abuts against and pushes the elastic clamping sleeve 22 after completing the axial free stroke 7.

[0064] In the lead-feeding unlocking step, when the push rod 41 pushes the elastic clamping sleeve 22 to move forward relative to the guide bushing 21, the multi-lobed elastic claw 221 at the front end of the elastic clamping sleeve 22 is released from the constraint of the inner conical wall 211 on the guide bushing 21 and opens to release the lead core 5; in the reset clamping step, when the clamping sleeve reset member 23 pushes the elastic clamping sleeve 22 to move backward relative to the guide bushing 21 and reset, the elastic claw 221 is compressed by the radial extrusion force of the inner conical wall 211 and clamps the lead core 5.

[0065] If there is no lead core 5 inside the elastic clamp sleeve 22 during the lead feeding process, a lead loading operation must be performed first. That is, before pressing the pressing cap 43, pull the pressing cap 43 off the end of the push rod 41 so that the lead loading channel 411 inside the push rod 41 is exposed; insert the lead core 5 into the lead loading channel 411 from the end of the push rod 41, and then reinsert the pressing cap 43 onto the push rod 41.

[0066] See Figures 2 to 14 The present invention also provides a press-type marking pen, the method of using the above-mentioned press-type marking pen is based on the press-type marking pen; the press-type marking pen includes a pen shell 1, a floating clamping mechanism 2, a protective sleeve assembly 3, a push rod assembly 4, and a lead core 5.

[0067] See Figures 2 to 5 The pen casing 1 includes a coaxially connected tail rod 11, a front grip rod 12, and a flange-type plug 13. An axial mounting cavity is formed inside the pen casing 1, where the floating clamping mechanism 2, the sheath assembly 3, the push rod assembly 4, and the lead core 5 are all installed. The front grip rod 12 is threadedly connected to the tail rod 11, and the flange-type plug 13 is threadedly connected to the front end of the front grip rod 12. The protective sleeve 31 of the sheath assembly 3 passes through the flange-type plug 13. The rear end outer wall of the tail rod 11 is provided with an anti-roll limiting plane 106 to prevent rolling. Multiple anti-roll limiting planes 106 are arranged in a regular polygon, enabling the pen to stop rolling on a table and prevent it from falling to the ground.

[0068] See Figures 3 to 7The protective sleeve assembly 3 is located at the front end of the pen shell 1. The protective sleeve assembly 3 includes a protective sleeve 31 that can slide along the axial direction of the pen shell 1, and a protective sleeve reset component 32 disposed between the protective sleeve 31 and the pen shell 1. The protective sleeve 31 is transparent, allowing easy observation of the position of the internal lead core. The front end of the protective sleeve 31 has an opening for the lead core 5 to enter, and the rear end of the protective sleeve 31 has a protective sleeve flange for engaging with the flange-type plug 13 for positioning. The protective sleeve reset component 32 can be a spring. Under normal conditions, the protective sleeve reset component 32 pushes the protective sleeve 31, causing the protective sleeve flange to abut against the flange-type plug 13. At this time, the protective sleeve 31 extends forward, thus retracting the front end of the lead core 5 into the protective sleeve 31. The retractable protective sleeve 31 provides all-time protection for the lead core. Under normal conditions, the lead core is retracted inside the protective sleeve. After resetting, the lead core automatically returns to its original position and is retracted into the protective sleeve, effectively preventing breakage due to impact, reducing wear, and extending the lead core's service life.

[0069] See Figures 4 to 6 as well as Figure 8 The floating clamping mechanism 2 is disposed within the pen casing 1 and can slide along the axial direction of the pen casing 1. The floating clamping mechanism 2 includes a guide bushing 21 and an elastic clamping sleeve 22 that slides through the guide bushing 21. The guide bushing 21 and the elastic clamping sleeve 22 are coaxially arranged. The lead core 5 is clamped in the elastic clamping sleeve 22. By moving the elastic clamping sleeve 22 relative to the guide bushing 21, the elastic clamping sleeve 22 clamps or releases the lead core 5. A coating elastic element 6 is provided between the rear end of the guide bushing 21 and the pen casing 1 to provide axial restoring force and coating pressure for the floating clamping mechanism 2. The coating elastic element 6 can be a constant pressure spring. When the coating is pressed, the protective sleeve 31 is compressed and retracts. The lead core 5 is driven by the force of the paper surface to move the floating clamping mechanism 2 backward and compress the coating elastic element 6, thereby the coating elastic element 6 provides stable coating pressure for the floating clamping mechanism 2. The floating clamping mechanism, combined with the coating elastic element, provides stable coating pressure. During coating, it can effectively offset the force fluctuations of manual operation, achieve stable and uniform coating density, and completely solve the problems of shallow coating or core breakage caused by uneven force. It is compatible with machine-readable testing standards.

[0070] See Figures 10 to 12The front end of the elastic clamping sleeve 22 is provided with multiple elastic claws 221 spaced apart along the circumferential direction. Each elastic claw 221 has three segments, and an axial through groove is provided between adjacent segments. The guide bushing 21 has an inner conical wall 211 for pressing the elastic claws 221. The inner conical wall 211 has a larger front diameter and a smaller rear diameter. The outer wall of the elastic claws 221 has an outer conical wall that matches the inner conical wall 211. When the elastic clamping sleeve 22 moves forward relative to the guide bushing 21, the elastic claws 221 open and release the lead core 5 because they are released from the constraint of the inner conical wall 211. When the elastic clamping sleeve 22 returns to its original position relative to the guide bushing 21, the multiple elastic claws 221 converge towards the center and clamp the lead core 5 due to the radial pressing force of the inner conical wall 211. This structure, through the cooperation of the elastic gripper and the inner conical wall, means that the greater the reverse force of the lead core on the paper surface during the coating process, the greater the tendency of the elastic clamping sleeve 22 to move backward relative to the guide bushing 21. The elastic clamping sleeve clamps more tightly, and there will be no situation where the lead core moves backward relative to the elastic clamping sleeve, so the clamping is stable and reliable.

[0071] See Figures 10 to 12 The elastic clamping sleeve 22 is provided with a diameter-reducing and thinning section 222. The thickness of the diameter-reducing and thinning section 222 is reduced relative to the thickness of other parts of the elastic clamping sleeve 22, so that the cantilever stiffness of each elastic claw 221 is uniform, the clamping force is more balanced, and the clamping effect is more stable. The elastic clamping sleeve 22 has three coaxial through structures, including a clamping hole 223 at the front end, a circular transition hole 224 behind the clamping hole 223, and a guide hole 225 at the rear end. The multiple elastic claws 221 surround the clamping hole 223. The shapes of the clamping hole 223 and the guide hole 225 are adapted to the shape of the lead core 5. The cross-section of the lead core 5 is rectangular, that is, the clamping hole 223 and the guide hole 225 are both rectangular hole structures. The position of the reduced diameter section 222 corresponds to that of the circular transition hole 224. The inner diameter of the circular transition hole 224 must be greater than the diameter of the outer circle of the clamping hole 223 and the diameter of the outer circle of the guide hole 225.

[0072] See Figures 8 to 11A clamping reset member 23 is installed between the guide bushing 21 and the elastic clamping sleeve 22. The clamping reset member 23 can be a spring. Under normal conditions, the elastic clamping sleeve 22 is always kept in the state of clamping the lead core 5 under the action of the clamping reset member 23. A second limiting spring 25 is installed at the rear end of the elastic clamping sleeve 22, and the second limiting spring 25 is locked in the annular groove of the elastic clamping sleeve 22. The two ends of the clamping reset member 23 abut against the rear end of the guide bushing 21 and the second limiting spring 25, respectively, so that the elastic clamping sleeve 22 always has the tendency to reset and lock the lead core 5. The rear end of the elastic clamping sleeve 22 is also provided with a first limiting spring 24. The first limiting spring 24 and the second limiting spring 25 are arranged at intervals. The first limiting spring 24 is located between the guide bushing 21 and the second limiting spring 25. The first limiting spring 24 can cooperate with the rear end face of the guide bushing 21 to stop, thereby limiting the maximum unlocking stroke of the elastic clamping sleeve 22 when it moves forward. When the elastic clamping sleeve 22 moves forward relative to the guide bushing 21, the first limiting spring 24 can abut against the rear end face of the guide bushing 21 to stop, thereby limiting the maximum unlocking stroke used by the elastic clamping sleeve 22 to unlock and release the lead core 5.

[0073] See Figure 10 and Figure 13 A spiral guide structure is provided between the pen shell 1 and the guide bushing 21. The spiral guide structure includes mutually cooperating spiral grooves 213 and guide protrusions 107. The spiral grooves 213 are two symmetrically arranged on the outer wall of the guide bushing 21, and the guide protrusions 107 are two arranged on the inner wall of the pen shell 1, with the guide protrusions 107 placed within the corresponding spiral grooves 213. During the application process, when the lead core 5 is subjected to the reaction force of the paper surface, and the lead core 5 pushes the floating clamping mechanism 2 to move backward, the spiral guide structure converts the axial displacement of the floating clamping mechanism 2 into circumferential rotation, thereby driving the lead core 5 to rotate and achieve the rotation of the lead core 5 for application. That is, during the retraction of the lead core 5 relative to the pen shell 1 during application, the lead core 5 will also rotate slightly relative to the pen shell 1, which allows the front end of the lead core 5 to scrape the paper surface evenly, resulting in a clearer application mark. In order for the lead core 5 to rotate smoothly, the size of the opening at the front end of the protective sleeve 31 and the core loading channel 411 can be appropriately increased, so as to ensure that the lead core 5 can rotate at a small angle. The rotation angle of the lead core 5 is preferably 2 to 5 degrees.

[0074] See Figure 11 The guide bushing 21 has a limiting shoulder 212 at the rear end of its inner hole. Under normal conditions, the elastic clamping sleeve 22 rests against the limiting shoulder 212 under the action of the clamping reset member 23. During the coating process, when the lead core 5 moves the elastic clamping sleeve 22 backward, the elastic clamping sleeve 22 moves the guide bushing 21 backward through the limiting shoulder 212.

[0075] See Figure 4 , Figure 7 and Figure 8The pen casing 1 is provided with a sleeve limiting step 101 and a bushing limiting step 102. The sleeve limiting step 101 is located on the rear side of the protective sleeve 31 to limit the maximum retraction stroke of the protective sleeve 31, corresponding to the normal working stroke of the card. The bushing limiting step 102 is located on the rear side of the guide bushing 21 to limit the maximum backward movement of the floating clamping mechanism 2, corresponding to the safety protection under abnormal working conditions and preventing the elastic element from being over-compressed and failing. The pen casing 1 is provided with a first support step 103 and a second support step 104. The first support step 103 is located on the rear side of the sleeve limiting step 101. The rear end of the sleeve reset member 32 abuts against the front end surface of the first support step 103, and the other end of the sleeve reset member 32 abuts against the protective sleeve 31. The second support step 104 is located behind the bushing limiting step 102. The rear end of the coating elastic member 6 abuts against the second support step 104, and the other end of the coating elastic member 6 abuts against the guide bushing 21. Under normal conditions, the coating elastic member 6 causes the front end of the guide bushing 21 to abut against the rear end surface of the first support step 103.

[0076] See Figures 4 to 6 , Figure 8 and Figure 9 The push rod assembly 4 is located at the tail of the pen shell 1 to trigger lead feeding. The push rod assembly 4 includes a push rod 41 that can slide along the axial direction of the pen shell 1 and a push rod reset member 42 disposed between the push rod 41 and the pen shell 1. The push rod reset member 42 can be a spring. There is an axial free travel 7 between the front end of the push rod 41 and the rear end of the elastic clamping sleeve 22. The axial free travel 7 is greater than the maximum backward movement of the floating clamping mechanism 2 to prevent the floating clamping mechanism 2 from hitting the push rod 41 during the application process, so that the application operation and lead feeding do not interfere with each other. When feeding lead, only after the push rod 41 has been pressed to complete the axial free travel 7 can the push rod 41 push the elastic clamping sleeve 22 to move forward relative to the guide bushing 21 to unlock it, so that the lead core 5 is fed by gravity. Slight bumps to the push rod 41 in daily life will not trigger lead feeding. This structure physically isolates the coating and lead feeding paths through axial free travel, achieving a design to prevent accidental contact. Whether in normal coating operations or daily bump and knock conditions, it can prevent the lead core from accidentally protruding and ensure stable use.

[0077] See Figures 4 to 6 and Figure 9The push rod 41 has a core-loading channel 411 arranged axially within it. The core-loading channel 411 is coaxially arranged with the guide hole 225 of the elastic clamping sleeve 22 and can communicate with each other. A pressing cap 43 is fitted onto the rear end of the push rod 41, which closes the rear end of the core-loading channel 411. A push rod limiting shoulder 105 is formed at the rear end of the inner hole of the pen shell 1. A third limiting spring 44 is installed at the tail end of the push rod 41. One end of the push rod reset member 42 abuts against the push rod limiting shoulder 105, and the other end of the push rod reset member 42 abuts against the third limiting spring 44. Under normal conditions, the push rod reset member 42 causes the push rod 41 to abut against the push rod limiting shoulder 105. With this structure, the pressing cap 43 can be removed to insert the lead core 5 into the core-loading channel 411. After the pressing cap 43 is installed, the lead feeding operation can be achieved by pressing the pressing cap 43.

[0078] Among them, circumferential anti-rotation structures are provided between the protective sleeve 31 and the pen shell 1, between the guide bushing 21 and the elastic clamping sleeve 22, and between the push rod 41 and the pen shell 1. The circumferential anti-rotation structure includes a matching guide groove and a guide limiting block. Taking the guide bushing 21 and the elastic clamping sleeve 22 as an example, the guide groove is set on the inner wall of the guide bushing 21, and the guide limiting block is set on the outer wall of the elastic clamping sleeve 22. Through the cooperation of the guide groove and the guide limiting block, the movement of the elastic clamping sleeve 22 relative to the guide bushing 21 is not affected, and the relative rotation of the two is restricted.

[0079] See Figures 2 to 4 , Figure 7 and Figure 14 The pen casing 1 has a detachable cap 8 at its front end. The cap 8 can be snapped onto the pen casing 1 for easy installation and removal. The cap 8 has a limiting post 801 that extends into the protective sleeve 31. The limiting post 801 restricts the front end of the lead core 5 within the protective sleeve 31 during lead feeding. The limiting post 801 has a vent hole communicating with the outside. When feeding lead, the cap 8 must be installed first, and then the pressing cap 43 must be pressed. When applying the lead, the cap 8 must be removed.

[0080] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0081] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of using a press-type marking pen, characterized in that, Includes the following steps: Positioning of the protective sleeve (31): The pen shell (1) is placed vertically, and the protective sleeve (31) that is retractably installed at the front end of the pen shell (1) faces downward, with the front end of the protective sleeve (31) aligned with the marking frame and in contact with the paper surface; Press and apply the coating; press down on the pen shell (1), and the protective sleeve (31) retracts backward relative to the pen shell (1) under pressure; the front end of the lead core (5) inside the pen shell (1) contacts the paper surface, and the lead core (5) is driven by the reaction force of the paper surface to move the floating clamping mechanism (2) inside the pen shell (1) backward as a whole and compress the coating elastic element (6) between the pen shell (1) and the floating clamping mechanism (2) until the protective sleeve (31) abuts against the protective sleeve limiting step (101) inside the pen shell (1) and stops retracting. At this time, the coating elastic element (6) provides coating pressure to the floating clamping mechanism (2), so that the lead core (5) fills the coating frame; Reset and store; Lifting the pen shell (1), the coating elastic element (6) drives the floating clamping mechanism (2) and the lead core (5) to reset. At the same time, the sleeve reset element (32) between the pen shell (1) and the protective sleeve (31) pushes the protective sleeve (31) to reset, thereby allowing the front end of the lead core (5) to be stored in the protective sleeve (31).

2. The method of using the press-type marking pen according to claim 1, characterized in that: In the pressing and coating step, when the lead core (5) drives the floating clamping mechanism (2) to move backward, the axial displacement of the floating clamping mechanism (2) is converted into circumferential rotation through the spiral guide structure between the floating clamping mechanism (2) and the pen shell (1), so that the floating clamping mechanism (2) drives the lead core (5) to rotate and coat the card.

3. The method of using the press-type marking pen according to claim 1, characterized in that: In the standby state before applying the card, the sheath reset member (32) pushes the protective sleeve (31) to extend it forward, so that the front end of the lead core (5) is stored in the protective sleeve (31); the card application elastic member (6) pushes the floating clamping mechanism (2), so that the front end of the floating clamping mechanism (2) abuts against the rear end surface of the first support step (103) inside the pen shell (1).

4. The method of using the press-type marking pen according to claim 1, characterized in that: In the pressing and coating step, when the pen shell (1) begins to move down, the protective sleeve (31) first retracts and compresses the protective sleeve reset member (32) relative to the pen shell (1) until the front end face of the lead core (5) is flush with the front end face of the protective sleeve (31). At this time, the front end of the lead core (5) begins to contact the paper surface. When the pen shell (1) continues to move down, the protective sleeve (31), the lead core (5) and the floating clamping mechanism (2) maintain their relative positions and move back relative to the pen shell (1) together until the protective sleeve (31) abuts against the protective sleeve limiting step (101).

5. The method of using the press-type marking pen according to claim 1, characterized in that, The following steps are performed before the protective sleeve positioning step: Unlock and feed lead; place the pen case (1) vertically with the protective sleeve (31) facing downwards; then press the pressing cap (43) at the end of the pen case (1), the pressing cap (43) drives the push rod (41) connected to it to move, the push rod (41) pushes the elastic clamping sleeve (22) of the floating clamping mechanism (2) to move forward relative to the guide bushing (21) on its outer side, the elastic clamping sleeve (22) releases the lead core (5), the lead core (5) slides downwards under the action of gravity to feed lead; Reset clamping; release the pressing cap (43), the push rod (41) is reset under the action of the push rod reset member (42) between the pen shell (1) and the push rod (41), and at the same time the elastic clamping sleeve (22) is reset under the action of the clamping sleeve reset member (23) between the guide bushing (21) and the elastic clamping sleeve (22), the elastic clamping sleeve (22) clamps and pulls back the lead core (5), so that the front end of the lead core (5) is retracted into the protective sleeve (31).

6. The method of using the press-type marking pen according to claim 5, characterized in that, The following steps are included before the unlocking and lead feeding step: Install the cap (8); insert the cap (8) into the front end of the pen shell (1), with the limiting post (801) of the cap (8) extending into the interior of the protective sleeve (31); In the unlocking and lead feeding step, the lead core (5) slides downward under the action of gravity until the front end of the lead core (5) hits the limiting post (801) and stops.

7. The method of using the press-type marking pen according to claim 5, characterized in that: In the standby state before lead feeding, the clamp reset member (23) pushes the elastic clamp sleeve (22), causing the elastic clamp sleeve (22) to have a tendency to move backward relative to the guide bushing (21), and thus the elastic clamp sleeve (22) is kept in the state of clamping the lead core (5); the push rod reset member (42) pushes the push rod (41), causing the push rod (41) to abut against the push rod limiting shoulder (105) in the pen shell (1), at which time the front end of the push rod (41) is far away from the rear end of the elastic clamp sleeve (22) and forms an axial free stroke (7).

8. The method of using the press-type marking pen according to claim 5, characterized in that: In the unlocking lead feeding step, when the pressing cap (43) is pressed, the pressing cap (43) drives the push rod (41) to move closer to the elastic clamping sleeve (22). At this time, the front end of the push rod (41) moves within the axial free stroke (7) reserved between the elastic clamping sleeve (22) and the push rod (41). When the pressing cap (43) continues to move down, the push rod (41) abuts against and pushes the elastic clamping sleeve (22) after completing the axial free stroke (7).

9. The method of using the press-type marking pen according to claim 5, characterized in that: In the unlocking and lead feeding step, when the push rod (41) pushes the elastic clamping sleeve (22) to move forward relative to the guide bushing (21), the multi-lobed elastic claw (221) at the front end of the elastic clamping sleeve (22) is released from the constraint of the inner conical wall (211) on the guide bushing (21) and opens to release the lead core (5); in the reset and clamping step, when the clamping sleeve reset member (23) pushes the elastic clamping sleeve (22) to move backward relative to the guide bushing (21) to reset, the elastic claw (221) is closed by the radial extrusion force of the inner conical wall (211) and clamps the lead core (5).

10. The method of using the press-type marking pen according to claim 5, characterized in that: In the unlocking lead feeding step, before pressing the pressing cap (43), the pressing cap (43) is pulled off from the end of the push rod (41), so that the core loading channel (411) inside the push rod (41) is exposed; the lead core (5) is inserted into the core loading channel (411) from the end of the push rod (41), and then the pressing cap (43) is reinserted onto the push rod (41).

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